Combined distance meter and view finder



Patented Dec. 1 0, 1935 UNITED STATES PATENT OFFICE COMBINED DISTANCEMETER AND VIEW FINDER many Original application January 20, 1934, SerialNo. 707,558. Divided and this application May 8, 1935, Serial No.20,384. In Germany January 1 Claim.

This invention relates to a combined distance meter and view finder ofthe type described in patent application Serial Number 707,558, filedJanuary 20, 1934, for use in connection with photographic cameras,wherein during focusing the object to be photographed in the view finderthe distance meter connected therewith is automatically adjusted so thatthe parallax between the lens and the view finder disappearsautomatically when the distance meter is correctly adjusted. Theexposure can take place as soon as the lens has been adjusted to thedistance indicated on the distance meter and the dimensions of thephotographic picture will accurately correspond with those of the imagein the view finder. If the distance meter mechanism is positivelyconnected with the lens adjusting mechanism, the lens can beautomatically adjusted during the adjustment of the distance meter.

An embodiment of the invention is illustrated by way of example in theaccompanying drawing in which:-

Fig. 1 shows in vertical section a. combined dis.- tance meter and viewfinder according to the in- 25, vention.

Fig. 2 is a'horizontal section taken at half the height of Fig. 1.

The arrangement comprises an outer casing I6 and an inner casing 5carrying the view finderthe knob 4. This axle is journalled in the outercasing and extends through the inner casing 5. The distance is adjustedby varying the direction of view through the view finder I 2 or throughthe distance meter respectively simultaneously with the adjustment ofthe distance by shifting an eye lens II. The eye lens II is mounted atone end l3a of a two-armed lever I3 pivotally mounted on a pin I4 fixedon the casing 5. A finger I3b formed on the otherarm of the lever l3contacts 10 with a cam disc I keyed on the axle I5. When the knob 4 isturned to adjust the mirror 2, the eye lens I l is simultaneouslyadjusted through the intermediary of the cam I and lever I3, so that theparallax of the view finder will be automatically 15 removed.

We claim:

A combined distance meter and view finder for photographic cameras,comprising in combination an outer casing, an inner casing in said outer20 casing, optical elements in saidinner casing tfor measuring thedistance-betweenthe lens and the object to be photographed, saidelements including a pivotally mounted mirrona two-armed 1ever pivotallymounted on said inner casing, a viewing lens mounted on one arm of saidlever, a finger on the other arm of said lever, an axle carrying saidmirror, a cam disc mounted on said axle and adapted to cooperate withsaid finger to move said lever and bring said lens-out or the horizontalplane to eliminate the parallax of the view finger when said mirror isswung.

. nnmz KtiPPENBENnnR.

MARTIN NOWICKI.

